// ts的基本类型（统统都是小写）
let name: string = '张三丰'
let age = 666 // 如果给定了值，它会进行自动推断
let isMan: boolean = true
let nullValue: null = null
let undefinedValue: undefined = undefined

let myName = 'zhangsan'
let abc = ['zhangsan', 111]

name = '张无忌'
age = 555

console.log(name, age, isMan, nullValue, undefinedValue)

export {}
